Merge davem@nuts.ninka.net:/home/davem/src/BK/net-2.5

into kernel.bkbits.net:/home/davem/net-2.5

Documentation/crypto/api-intro.txt

@@ -185,6 +185,7 @@ Original developers of the crypto algorithms:
   Jean-Luc Cooke (SHA256)
   Kazunori Miyazawa / USAGI (HMAC)
   Matthew Skala (Twofish)
+  Dag Arne Osvik (Serpent)
   
 DES algorithm contributors:
   Raimar Falke

crypto/Makefile

@@ -5,8 +5,10 @@
 export-objs := api.o hmac.o
 
 autoload-crypto-$(CONFIG_KMOD) = autoload.o
+proc-crypto-$(CONFIG_PROC_FS) = proc.o
 
-obj-$(CONFIG_CRYPTO) += api.o cipher.o digest.o compress.o $(autoload-crypto-y)
+obj-$(CONFIG_CRYPTO) += api.o cipher.o digest.o compress.o \
+			$(autoload-crypto-y) $(proc-crypto-y)
 
 obj-$(CONFIG_CRYPTO_HMAC) += hmac.o
 obj-$(CONFIG_CRYPTO_NULL) += crypto_null.o

crypto/api.c

@@ -16,12 +16,11 @@
 #include <linux/init.h>
 #include <linux/crypto.h>
 #include <linux/rwsem.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
+#include <linux/slab.h>
 #include "internal.h"
 
-static LIST_HEAD(crypto_alg_list);
-static DECLARE_RWSEM(crypto_alg_sem);
+LIST_HEAD(crypto_alg_list);
+DECLARE_RWSEM(crypto_alg_sem);
 
 static inline int crypto_alg_get(struct crypto_alg *alg)
 {
@@ -124,44 +123,26 @@ struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
 	if (alg == NULL)
 		goto out;
 	
-	tfm = kmalloc(sizeof(*tfm), GFP_KERNEL);
+	tfm = kmalloc(sizeof(*tfm) + alg->cra_ctxsize, GFP_KERNEL);
 	if (tfm == NULL)
 		goto out_put;
 
 	memset(tfm, 0, sizeof(*tfm));
 	
-	if (alg->cra_ctxsize) {
-		tfm->crt_ctx = kmalloc(alg->cra_ctxsize, GFP_KERNEL);
-		if (tfm->crt_ctx == NULL)
-			goto out_free_tfm;
-	}
+	tfm->crt_ctx = (void*) &tfm[1];
 
 	tfm->__crt_alg = alg;
 	
-	if (alg->cra_blocksize) {
-		tfm->crt_work_block = kmalloc(alg->cra_blocksize + 1,
-					      GFP_KERNEL);
-		if (tfm->crt_work_block == NULL)
-			goto out_free_ctx;
-	}
-
 	if (crypto_init_flags(tfm, flags))
-		goto out_free_work_block;
+		goto out_free_tfm;
 		
 	if (crypto_init_ops(tfm)) {
 		crypto_exit_ops(tfm);
-		goto out_free_ctx;
+		goto out_free_tfm;
 	}
 
 	goto out;
 
-out_free_work_block:
-	if (tfm->__crt_alg->cra_blocksize)
-		kfree(tfm->crt_work_block);
-
-out_free_ctx:
-	if (tfm->__crt_alg->cra_ctxsize)
-		kfree(tfm->crt_ctx);
 out_free_tfm:
 	kfree(tfm);
 	tfm = NULL;
@@ -173,12 +154,6 @@ struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
 
 void crypto_free_tfm(struct crypto_tfm *tfm)
 {
-	if (tfm->__crt_alg->cra_ctxsize)
-		kfree(tfm->crt_ctx);
-		
-	if (tfm->__crt_alg->cra_blocksize)
-		kfree(tfm->crt_work_block);
-		
 	if (crypto_tfm_alg_type(tfm) == CRYPTO_ALG_TYPE_CIPHER)
 		if (tfm->crt_cipher.cit_iv)
 			kfree(tfm->crt_cipher.cit_iv);
@@ -240,89 +215,10 @@ int crypto_alg_available(const char *name, u32 flags)
 	return ret;
 }
 
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
-	struct list_head *v;
-	loff_t n = *pos;
-
-	down_read(&crypto_alg_sem);
-	list_for_each(v, &crypto_alg_list)
-		if (!n--)
-			return list_entry(v, struct crypto_alg, cra_list);
-	return NULL;
-}
-
-static void *c_next(struct seq_file *m, void *p, loff_t *pos)
-{
-	struct list_head *v = p;
-	
-	(*pos)++;
-	v = v->next;
-	return (v == &crypto_alg_list) ?
-		NULL : list_entry(v, struct crypto_alg, cra_list);
-}
-
-static void c_stop(struct seq_file *m, void *p)
-{
-	up_read(&crypto_alg_sem);
-}
-
-static int c_show(struct seq_file *m, void *p)
-{
-	struct crypto_alg *alg = (struct crypto_alg *)p;
-	
-	seq_printf(m, "name         : %s\n", alg->cra_name);
-	seq_printf(m, "module       : %s\n", module_name(alg->cra_module));
-	seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
-	
-	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
-	case CRYPTO_ALG_TYPE_CIPHER:
-		seq_printf(m, "min keysize  : %u\n",
-					alg->cra_cipher.cia_min_keysize);
-		seq_printf(m, "max keysize  : %u\n",
-					alg->cra_cipher.cia_max_keysize);
-		seq_printf(m, "ivsize       : %u\n",
-					alg->cra_cipher.cia_ivsize);
-		break;
-		
-	case CRYPTO_ALG_TYPE_DIGEST:
-		seq_printf(m, "digestsize   : %u\n",
-		           alg->cra_digest.dia_digestsize);
-		break;
-	}
-
-	seq_putc(m, '\n');
-	return 0;
-}
-
-static struct seq_operations crypto_seq_ops = {
-	.start		= c_start,
-	.next		= c_next,
-	.stop		= c_stop,
-	.show		= c_show
-};
-
-static int crypto_info_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &crypto_seq_ops);
-}
-        
-struct file_operations proc_crypto_ops = {
-	.open		= crypto_info_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release
-};
-
 static int __init init_crypto(void)
 {
-	struct proc_dir_entry *proc;
-	
 	printk(KERN_INFO "Initializing Cryptographic API\n");
-	proc = create_proc_entry("crypto", 0, NULL);
-	if (proc)
-		proc->proc_fops = &proc_crypto_ops;
-		
+	crypto_init_proc();
 	return 0;
 }
 

crypto/internal.h

@@ -11,9 +11,9 @@
  */
 #ifndef _CRYPTO_INTERNAL_H
 #define _CRYPTO_INTERNAL_H
-
 #include <linux/mm.h>
 #include <linux/highmem.h>
+#include <linux/init.h>
 #include <asm/hardirq.h>
 #include <asm/softirq.h>
 
@@ -65,6 +65,13 @@ static inline void crypto_free_hmac_block(struct crypto_tfm *tfm)
 { }
 #endif
 
+#ifdef CONFIG_PROC_FS
+void __init crypto_init_proc(void);
+#else
+static inline void crypto_init_proc(void)
+{ }
+#endif
+
 int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
 int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
 int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);

crypto/proc.c

+/*
+ * Scatterlist Cryptographic API.
+ *
+ * Procfs information.
+ *
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option) 
+ * any later version.
+ *
+ */
+#include <linux/init.h>
+#include <linux/crypto.h>
+#include <linux/rwsem.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include "internal.h"
+
+extern struct list_head crypto_alg_list;
+extern struct rw_semaphore crypto_alg_sem;
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+	struct list_head *v;
+	loff_t n = *pos;
+
+	down_read(&crypto_alg_sem);
+	list_for_each(v, &crypto_alg_list)
+		if (!n--)
+			return list_entry(v, struct crypto_alg, cra_list);
+	return NULL;
+}
+
+static void *c_next(struct seq_file *m, void *p, loff_t *pos)
+{
+	struct list_head *v = p;
+	
+	(*pos)++;
+	v = v->next;
+	return (v == &crypto_alg_list) ?
+		NULL : list_entry(v, struct crypto_alg, cra_list);
+}
+
+static void c_stop(struct seq_file *m, void *p)
+{
+	up_read(&crypto_alg_sem);
+}
+
+static int c_show(struct seq_file *m, void *p)
+{
+	struct crypto_alg *alg = (struct crypto_alg *)p;
+	
+	seq_printf(m, "name         : %s\n", alg->cra_name);
+	seq_printf(m, "module       : %s\n", module_name(alg->cra_module));
+	seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
+	
+	switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
+	case CRYPTO_ALG_TYPE_CIPHER:
+		seq_printf(m, "min keysize  : %u\n",
+					alg->cra_cipher.cia_min_keysize);
+		seq_printf(m, "max keysize  : %u\n",
+					alg->cra_cipher.cia_max_keysize);
+		seq_printf(m, "ivsize       : %u\n",
+					alg->cra_cipher.cia_ivsize);
+		break;
+		
+	case CRYPTO_ALG_TYPE_DIGEST:
+		seq_printf(m, "digestsize   : %u\n",
+		           alg->cra_digest.dia_digestsize);
+		break;
+	}
+
+	seq_putc(m, '\n');
+	return 0;
+}
+
+static struct seq_operations crypto_seq_ops = {
+	.start		= c_start,
+	.next		= c_next,
+	.stop		= c_stop,
+	.show		= c_show
+};
+
+static int crypto_info_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &crypto_seq_ops);
+}
+        
+static struct file_operations proc_crypto_ops = {
+	.open		= crypto_info_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release
+};
+
+void __init crypto_init_proc(void)
+{
+	struct proc_dir_entry *proc;
+	
+	proc = create_proc_entry("crypto", 0, NULL);
+	if (proc)
+		proc->proc_fops = &proc_crypto_ops;
+}

include/linux/crypto.h

@@ -161,7 +161,6 @@ struct compress_tfm {
 struct crypto_tfm {
 
 	void *crt_ctx;
-	void *crt_work_block;
 	u32 crt_flags;
 	
 	union {

include/net/route.h

@@ -107,7 +107,7 @@ struct rt_cache_stat
 extern struct ip_rt_acct *ip_rt_acct;
 
 struct in_device;
-extern void		ip_rt_init(void);
+extern int		ip_rt_init(void);
 extern void		ip_rt_redirect(u32 old_gw, u32 dst, u32 new_gw,
 				       u32 src, u8 tos, struct net_device *dev);
 extern void		ip_rt_advice(struct rtable **rp, int advice);

net/ipv4/route.c

@@ -53,6 +53,7 @@
  *	Vladimir V. Ivanov	:	IP rule info (flowid) is really useful.
  *		Marc Boucher	:	routing by fwmark
  *	Robert Olsson		:	Added rt_cache statistics
+ *	Arnaldo C. Melo		:	Convert proc stuff to seq_file
  *
  *		This program is free software; you can redistribute it and/or
  *		modify it under the terms of the GNU General Public License
@@ -208,74 +209,107 @@ static __inline__ unsigned rt_hash_code(u32 daddr, u32 saddr, u8 tos)
 	return (hash ^ (hash >> 8)) & rt_hash_mask;
 }
 
-static int rt_cache_get_info(char *buffer, char **start, off_t offset,
-				int length)
+#ifdef CONFIG_PROC_FS
+struct rt_cache_iter_state {
+	int bucket;
+};
+
+static struct rtable *rt_cache_get_first(struct seq_file *seq)
 {
-	int len = 0;
-	off_t pos = 128;
-	char temp[256];
-	struct rtable *r;
-	int i;
+	struct rtable *r = NULL;
+	struct rt_cache_iter_state *st = seq->private;
 
-	if (offset < 128) {
-		sprintf(buffer, "%-127s\n",
-			"Iface\tDestination\tGateway \tFlags\t\tRefCnt\tUse\t"
-			"Metric\tSource\t\tMTU\tWindow\tIRTT\tTOS\tHHRef\t"
-			"HHUptod\tSpecDst");
-		len = 128;
-  	}
-	
-	for (i = rt_hash_mask; i >= 0; i--) {
-		read_lock_bh(&rt_hash_table[i].lock);
-		for (r = rt_hash_table[i].chain; r; r = r->u.rt_next) {
-			/*
-			 *	Spin through entries until we are ready
-			 */
-			pos += 128;
+	for (st->bucket = rt_hash_mask; st->bucket >= 0; --st->bucket) {
+		read_lock_bh(&rt_hash_table[st->bucket].lock);
+		r = rt_hash_table[st->bucket].chain;
+		if (r)
+			break;
+		read_unlock_bh(&rt_hash_table[st->bucket].lock);
+	}
+	return r;
+}
 
-			if (pos <= offset) {
-				len = 0;
-				continue;
-			}
-			sprintf(temp, "%s\t%08lX\t%08lX\t%8X\t%d\t%u\t%d\t"
-				"%08lX\t%d\t%u\t%u\t%02X\t%d\t%1d\t%08X",
-				r->u.dst.dev ? r->u.dst.dev->name : "*",
-				(unsigned long)r->rt_dst,
-				(unsigned long)r->rt_gateway,
-				r->rt_flags,
-				atomic_read(&r->u.dst.__refcnt),
-				r->u.dst.__use,
-				0,
-				(unsigned long)r->rt_src,
-				(dst_metric(&r->u.dst, RTAX_ADVMSS) ?
-				 (int) dst_metric(&r->u.dst, RTAX_ADVMSS) + 40 : 0),
-				dst_metric(&r->u.dst, RTAX_WINDOW),
-				(int)((dst_metric(&r->u.dst, RTAX_RTT) >> 3)
-				      + dst_metric(&r->u.dst, RTAX_RTTVAR)),
-				r->fl.fl4_tos,
-				r->u.dst.hh ?
-					atomic_read(&r->u.dst.hh->hh_refcnt) :
-					-1,
-				r->u.dst.hh ?
-			       		(r->u.dst.hh->hh_output ==
-					 dev_queue_xmit) : 0,
-				r->rt_spec_dst);
-			sprintf(buffer + len, "%-127s\n", temp);
-			len += 128;
-			if (pos >= offset+length) {
-				read_unlock_bh(&rt_hash_table[i].lock);
-				goto done;
-			}
-		}
-		read_unlock_bh(&rt_hash_table[i].lock);
-        }
+static struct rtable *rt_cache_get_next(struct seq_file *seq, struct rtable *r)
+{
+	struct rt_cache_iter_state *st = seq->private;
 
-done:
-  	*start = buffer + len - (pos - offset);
-  	len = pos - offset;
-  	if (len > length)
-  		len = length;
-  	return len;
+	r = r->u.rt_next;
+	while (!r) {
+		read_unlock_bh(&rt_hash_table[st->bucket].lock);
+		if (--st->bucket < 0)
+			break;
+		read_lock_bh(&rt_hash_table[st->bucket].lock);
+		r = rt_hash_table[st->bucket].chain;
+	}
+	return r;
+}
+
+static struct rtable *rt_cache_get_idx(struct seq_file *seq, loff_t pos)
+{
+	struct rtable *r = rt_cache_get_first(seq);
+
+	if (r)
+		while (pos && (r = rt_cache_get_next(seq, r)))
+			--pos;
+	return pos ? NULL : r;
+}
+
+static void *rt_cache_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	return *pos ? rt_cache_get_idx(seq, *pos) : (void *)1;
+}
+
+static void *rt_cache_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct rtable *r = NULL;
+
+	if (v == (void *)1)
+		r = rt_cache_get_first(seq);
+	else
+		r = rt_cache_get_next(seq, v);
+	++*pos;
+	return r;
+}
+
+static void rt_cache_seq_stop(struct seq_file *seq, void *v)
+{
+	if (v && v != (void *)1) {
+		struct rt_cache_iter_state *st = seq->private;
+
+		read_unlock_bh(&rt_hash_table[st->bucket].lock);
+	}
+}
+
+static int rt_cache_seq_show(struct seq_file *seq, void *v)
+{
+	if (v == (void *)1)
+		seq_printf(seq, "%-127s\n",
+			   "Iface\tDestination\tGateway \tFlags\t\tRefCnt\tUse\t"
+			   "Metric\tSource\t\tMTU\tWindow\tIRTT\tTOS\tHHRef\t"
+			   "HHUptod\tSpecDst");
+	else {
+		struct rtable *r = v;
+		char temp[256];
+
+		sprintf(temp, "%s\t%08lX\t%08lX\t%8X\t%d\t%u\t%d\t"
+			      "%08lX\t%d\t%u\t%u\t%02X\t%d\t%1d\t%08X",
+			r->u.dst.dev ? r->u.dst.dev->name : "*",
+			(unsigned long)r->rt_dst, (unsigned long)r->rt_gateway,
+			r->rt_flags, atomic_read(&r->u.dst.__refcnt),
+			r->u.dst.__use, 0, (unsigned long)r->rt_src,
+			(dst_metric(&r->u.dst, RTAX_ADVMSS) ?
+			     (int)dst_metric(&r->u.dst, RTAX_ADVMSS) + 40 : 0),
+			dst_metric(&r->u.dst, RTAX_WINDOW),
+			(int)((dst_metric(&r->u.dst, RTAX_RTT) >> 3) +
+			      dst_metric(&r->u.dst, RTAX_RTTVAR)),
+			r->fl.fl4_tos,
+			r->u.dst.hh ? atomic_read(&r->u.dst.hh->hh_refcnt) : -1,
+			r->u.dst.hh ? (r->u.dst.hh->hh_output ==
+				       dev_queue_xmit) : 0,
+			r->rt_spec_dst);
+		seq_printf(seq, "%-127s\n", temp);
+        }
+  	return 0;
 }
 
 static int rt_cache_stat_get_info(char *buffer, char **start, off_t offset, int length)
@@ -316,6 +350,59 @@ static int rt_cache_stat_get_info(char *buffer, char **start, off_t offset, int
 	*start = buffer + offset;
   	return len;
 }
+
+static struct seq_operations rt_cache_seq_ops = {
+	.start  = rt_cache_seq_start,
+	.next   = rt_cache_seq_next,
+	.stop   = rt_cache_seq_stop,
+	.show   = rt_cache_seq_show,
+};
+
+static int rt_cache_seq_open(struct inode *inode, struct file *file)
+{
+	struct seq_file *seq;
+	int rc = -ENOMEM;
+	struct rt_cache_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
+
+	if (!s)
+		goto out;
+	rc = seq_open(file, &rt_cache_seq_ops);
+	if (rc)
+		goto out_kfree;
+	seq          = file->private_data;
+	seq->private = s;
+	memset(s, 0, sizeof(*s));
+out:
+	return rc;
+out_kfree:
+	kfree(s);
+	goto out;
+}
+
+static struct file_operations rt_cache_seq_fops = {
+	.open	 = rt_cache_seq_open,
+	.read	 = seq_read,
+	.llseek	 = seq_lseek,
+	.release = ip_seq_release,
+};
+
+int __init rt_cache_proc_init(void)
+{
+	int rc = 0;
+	struct proc_dir_entry *p = create_proc_entry("rt_cache", S_IRUGO,
+						     proc_net);
+	if (p)
+		p->proc_fops = &rt_cache_seq_fops;
+	else
+		rc = -ENOMEM;
+	return rc;
+}
+
+void __init rt_cache_proc_exit(void)
+{
+	remove_proc_entry("rt_cache", proc_net);
+}
+#endif /* CONFIG_PROC_FS */
   
 static __inline__ void rt_free(struct rtable *rt)
 {
@@ -2456,6 +2543,7 @@ struct ip_rt_acct *ip_rt_acct;
 /* IP route accounting ptr for this logical cpu number. */
 #define IP_RT_ACCT_CPU(i) (ip_rt_acct + i * 256)
 
+#ifdef CONFIG_PROC_FS
 static int ip_rt_acct_read(char *buffer, char **start, off_t offset,
 			   int length, int *eof, void *data)
 {
@@ -2488,11 +2576,12 @@ static int ip_rt_acct_read(char *buffer, char **start, off_t offset,
 	}
 	return length;
 }
-#endif
+#endif /* CONFIG_PROC_FS */
+#endif /* CONFIG_NET_CLS_ROUTE */
 
-void __init ip_rt_init(void)
+int __init ip_rt_init(void)
 {
-	int i, order, goal;
+	int i, order, goal, rc = 0;
 
 #ifdef CONFIG_NET_CLS_ROUTE
 	for (order = 0;
@@ -2560,10 +2649,16 @@ void __init ip_rt_init(void)
 					ip_rt_gc_interval;
 	add_timer(&rt_periodic_timer);
 
-	proc_net_create ("rt_cache", 0, rt_cache_get_info);
+	if (rt_cache_proc_init())
+		goto out_enomem;
 	proc_net_create ("rt_cache_stat", 0, rt_cache_stat_get_info);
 #ifdef CONFIG_NET_CLS_ROUTE
 	create_proc_read_entry("net/rt_acct", 0, 0, ip_rt_acct_read, NULL);
 #endif
 	xfrm_init();
+out:
+	return rc;
+out_enomem:
+	rc = -ENOMEM;
+	goto out;
 }